Method of making reenforced bags



f May 22, 1928'. 1 1,671,050

G. C. SNYDER 1 METHOD OF MAKING REENFORCED BAGS,

Original Filed May 9, 19 24" Z ShetS-Sheet. 1

' INVENTOR. 590/ 6 [J22 def.

A TTORNE Y.

May 22, 1928.

G. C. SNYDER METHOD OF MAKING REENFORCED BAGS 2 Shets-Sheet 2 OriginalFiled May 9, 1924 IN VEN TOR fad/ya 55/214? A TTORNE Y.

' Patented May 22, 192 8.

UNITED STATES PATENT OFFICE.

GEORGE C. SNYDER, OF LONG ISLAND CITY, NEW YORK, ASSIGNOR TO KAELHAMANU- FACTUIBING COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEWYORK.

METHOD OF MAKING BEENIOBCED BAGS.

Original application ,flled Kay 9, 1924, Serial No. 712,037. Divided andthis application illed October 24,

1925, Serial No. 64,610. Renewed November l0, 1927.

reenforced bags is disclosed in said co-pending application but is notclaimed therein,

the present application being a division of the said application SerialNo. 712,037.

An important object of this invention is to provide a method of makingreenforced bags with a view to low production cost without sacrificingphysical strength in the article. produced.

Another object is to provide novel steps" in the method of making bagswith reenforced bottoms which will be readily collapsible.

Another object is to provide novel steps in the method for providingreenforced handles in the sides of a bag, by which it may beconveniently carried.

With these and other objects in view, the invention resides in the novelsteps in the method of making bags as hereinafter set forth, illustratedin the accompanying drawings and specifically pointed outjn the appendedclaims.-

In the drawings, wherein one embodiment ofthe invention is shown by wayof illustration,

Fig. 1 is a perspective view of the improved reenforced bag, parts beingshown in broken lines;

Fig. 2 is a perspective view of portions of the bag to more clearlyillustrate the construction thereof;

'Fig. 3 is a plan of the preferred blank from which the improved bag ismade,'said 2 view having associated therewith the reenforcements whichare to be pasted to the blanks; v .i Fig. 4 is-a fragmentaryview of themiddle portion of the blank showing how the bottom lining is secured tothe blank;

' Fig. 5 is a sectional side elevation to illustrate a form of worktable on which certain e of the operations on the blank may be .per-

formed;

Fig. 6 is an enlarged detail section ofthe main parts of the work table,

pletion of the improved bag.

out, it will have triangular transverse inner The triangular infolds arepasted to the side Fig. 7 is a perspective view of a completedreenforced bag blank, illustrating additional steps in the method; and

Fig. 8 is a perspective view of the reenforced-bag blank of Fig. 7doubledup and showing some of the final steps in the com- The bags madeunder the present invention are composed mainly of sheets of flexiblematerial, such as paper, and the outlines of the bag blanks and thebasic method of making the bags is preferably along the lines of U. S.Letters Patent to Andrew C. Campbell, No. 227,147, dated May 4, 1880, ya reference to which will avoid the necessity of more detaileddescription.

In order that the invention may be more readily understood, I will firstdescribe my improved bag, for the manufacture of which my method isparticularly adapted. Referring to Figs. 1 and 2, the bag is shown ascomprising two opposite main walls 15 and 16 which are continuous andunbroken throughout their surfaces, so that they may be directly printedupon and the bag also comprises walls 17, 18 intermediate of the mainwalls 15, 16 and also a bottom wall 19. The bag shown in said figureshas rectangular corners formed by creases between the main walls and theintermediate walls, but preferably these creases are omitted from thebags, they being shown in the drawings for enabling better illustration.Such creases may, however, be provided if desired.

When the improved bag is made according to the patented constructionbefore-mentioned, it will have side seams 20 and longitudinal side foldsat 21, which enable the bag to be folded down flat. The bottom 10 of theba has a central crease or fold line 22 and w ien the bag is opened orsquared infolds at the ends of the crease line .22, and these triangularinfolds form pockets which open out from the bottom of the bag.

walls 17, 18 as in the patented construction mentioned. Also as in thesaid patent the fold lines will be not only at the creases 21 but at thecrease 22, so that when thebag is flattened, the bottom 19 will foldupward- 1y within and between the main walls 15, 16. i

A bottom reenforcing lining is shown as comprising a bottom-portion 23having low main walls 24, 25 and with low side or end walls 26. Saidlining also has triangular portions 27 which correspond to thetriangular infolds of the bag bottom. The bottom lining preferably hasthe outer surfaces of its low walls 24, 25 and 26 pasted to thecorresponding inner surfaces of the bag, this being done before the bagis made, with the result that the bottom 23 0f the lining is left freeand undetached from the bag bottom 19 although the surfaces of bothbottoms may be pasted or gummed together if desired. They are preferablyleft free, however, to permit easy folding or flattening of the bagbottom when the bag is collapsed, as if they were pasted together, thiswould interfere somewhat-with ready folding; The exact manner in whichthe reenforcing lining is preferably applied to the bag will appearclear from the hereinafter described method, but it may now be statedthat the said lining forms in reality a part of the bag bottom andfollows all the surfaces thereof and hence follows the creases and foldstherein together with the triangular infolds corresponding with thetriangular portions 27.

Handles for the bag are .provided by forming hand-holes 28, 29 which arelocated in the opposite main walls 15, 16, at the mouth of the bag. Atthese points there are provided reenforcing sections or members 30, 31which are of preferably rectangular shape and composed of heavy card orpasteboard or the like and they have hand-holes corresponding with thehand-holes. 28, 29. The material. of the bags extends, in the blank,beyond the reenforcing sections 30, 31 and the portion 32 of the bagmaterial is folded within and pasted to the walls of the bag, saidportion 32 providing. an infold which extends entirely around the mouthof the bag and; to points within the side seams b 20. Such constructionprovides a turned overedge 33 at the mouth of the bag. The reenforcingsections 30, 31 are gummed or pasted withinthe bag-and underneathinfolded mouth portion 32. Hence, no parts of the reenforcing sectionsin which the hand-holes are formed are located on the outside of thebag, and they are fully enclosed within the material of the bag so thatthere is no danger of their being stripped or detached from the bag. .asthey form permanent material parts thereof. Also because of the factthat the seams of the bag are at the side edges, there will be no seamextending around the reenforcing sections 30, 31 to interfere with neatand eflicient pasting together of the adjacent parts of the bagstructure.

Fig. 3 illustrates the preferred form of blank to be used, it beingshaped as in the patented construction beforementioned. It

will therefore have a wide portion 34 which provides two lateralextensions 35, 35 beyond the narrower portion 36. Associated with F 1g.3 are shown the reenforcements corresponding with the reenforcements 23,

A large quantity of such blanks and re enforcements having beenprovided, a worker may first take a reenforcing lining 23 and paste itapproximately at the middle of the elongated blank, so that it will belocated as illustrated in Fig. 4. The reenforcing lining 23 preferablydoes not extend upon but terminates short of the lateral extensions 35.The paste is preferably applied along the lines 37, 38 so as to securethe lining 23 to the blank along opposite transverse edges of thelining, thereby leaving the intermediate portion of the lining free fromthe blank. Thelength of the reenforcing lining 23 will thereforecorrespond to the width of the narrow. portion 36 of the blank.

Referring to Figs. 5 and 6 a suitable table and operating meansassociated therewith are illustrated, adapted to facilitate operation ofthe workers in carrying out the method. The table 39 has its toparranged at a suitable height from the floor so that two workers may sitthereat, one'at each end of the top 39. The operating table is providedwith a creaser 40 for forming a transverse central crease conforming tothe crease line 22 of the bag, and a creaser 41 which is recessed toreceive the creaser 40 and,

which is adapted to form the parallel crease lines 42, 42', one at eachside of the crease line 22, the fold at '22 being thereby imparted in adirection opposite to the folds at 42, 42. The creases 42., 42correspond with the folds at the long edges of the bottom of thePreferably the pasting on of the bottom reenforcing lining 23 isaccomplished before the so-reenforced blanks are supplied to the workersat thetable 39 although one of the two workers could 'be utilized topaste on the lining 23 before the said workers perform their conjointwork. The two workers will take the blank which is reenforced bythelining 23 and will adjust it onthe table top 39 so that each of themwill have access to one end of the blank and so that the middlereenforced portion of the blank will be positionedin between thecreasers' 40, 41. One of the workers may now form the transverse creasesin the middle portion of the reenforced bag blank or this may be done bysaidworker after the reenforcements 30, 31 for the handles have-beenapplied by the workers. Each of the workers takes a reenforcing memberor section, and one of them'pastes or ijlll'IlS the-section 30 atone'end of the blank and the other worker pastes the section 31 at theother end of the blank, taking care that each section is pasted aboutmidway of the side edges of the blank and at a suitable distance fromthe corresponding end edge of the blank. This will leave at both ends ofthe blank, portions 32, 32, which extend beyond the gummed-onreenforcing sections. Each worker will then apply paste or gum toaportion 32 and will paste it over and to the corresponding reenforcingsection and also throughout, the width of the blank.

The creasing of the blank may be done either before or after thereenforcing sections 30, 31 are applied by the workers. The creasing maybe performed by one of the workers making. use of mechanism now to'bedescribed. The table 39 is provided with a foot treadle 43 pivotablyconnected with a link 44, which in turn is pivot-ably connected with astem 45 which has a suitable sliding connection with the 'creaser 40. Aspring 46 supports the creaser 40 and tends to push the stem 45 awayfrom the creaser 40. The bot tom of the table is provided with a stop 47against which an abutment on the said creaser may strike when thetreadle 43 is operated. The table top 39 is provided with a transverseslot 48 through which the creaser 40 may be upwardly projected againstthe reenforced blank. 1

The other creaser. 41 is carried at its upper end by means of a sliderod 49, so that said creaser is positioned above the table top 39 anddirectly above the creaser 40, so that the creaser 40 may move into thespace of creaser 41. A supporting arm 50 provides a guide for the.upperiend of the slide rod 49 while a suitably supported arm 51 providesa guide for the lower end of the rod 49. A

tension spring 52 tends to pull the rod 49 and the creaser 41 upwardlyaway from the table. A lever 53 is loosely connected at one end with thelower end of the slide rod 49, while the other end of said lever islocated so that it may be struck by a toe 54 on the treadle 43 when thetreadle is operated.

It will be seen that when one of the workers operates the treadle 43,the creaser 40 will be moved upwardly to form the intermediatetransverse crease 22 in the blank, and that before the full movement ofthe treadle 43 is made, the abutment on the creaser 40 will strike thestop 47, but that on completion of the treadle movement the stem 45 willslide in the creaser 40, and at this time the toe 54 will strike thelever 53 and can the creaser 41 to move downwardly and form the twocreases 42, 42 at each side of the crease 22, but the creasing will' bein opposite directions. When the foot is removed from the treadle 43,the, creasers will automatically move in opposite directions and the bagblank will be released therefrom. One of the workers then pulls the bagblank, reenforced as described, from between the creasers, so

. partsbetween the creases 42, 42 will fold inwardly along the line ofthe crease 22, and suitable means is employed, as the hand of theWorker, for turning over the lateral extensions'35, 35 on to the narrowportion 36 of the blank as shown in Fig. 8, thereby providing the sideseams and the side folds for the completed bag. Suitable pressure meansmay be employed to press the bag, when completed along the lines shownin ig. 8. The complete bag will now be flat and when the gum issufficiently dry the be may be opened out into the shape shown in ig. 1.

One step remains to be performed, and

cutting punch, which may be operated by hand. The hand-holes will .thusbe out according to the dotted lines in Fig. 8.

It is clearly obvious that the operations described herein as performedby hand may be carried out by suitable mechanism in a.

continuous runnin machine so that no hand work at all woul be required.It is also obvious that the invention is susceptible of more or lessmodification and that it would still be within the scope of the appendedclaims. 7

What I claim as new is:

1. In a method of making reenforced bags, providing a flexible blankhaving a portion wider'than the remaining portlon, securing oppositeedge-portions of a flexible sheet transversely to the blank at a middleportion of the blank, and leaving the intermediate portion of the sheetfree from the blank, and forming a bag from said blank, so that the saidsheet reenforces the bottom of the bag.

2. In a method of making reenforced bags, providing a flexible blankhaving a. portion widerthan the remaining portion, securing oppositeedge-portions of a flexible sheet transversely to the blank at a middleportion of the blank, and leaving the intermediate portion of the sheetfree from the blank, creasing the blank and the sheet bags, providing anelongated flexible blank,

securing reenforcing sections to the opposite ends of the blank andleaving free end-portionfs beyond said sections, turning saidendportions over on to the reenforcing sections and securing themthereto, forming a bag from the blank, and producing hand-holes throughthe bag and the reenforcing sections to provide handles.

4. In a method of making reenforced bags, providing an elongatedflexible blank having a portion wider than the remaining portion andadapted to form one wall of the bag, gumming reenforcing sections to theopposite ends of one surface of the blank and leaving free end-portionsbeyond said sections, turning said end-portions over on to thereenforcing sections and adhesively securing them to said sections,transversely creasing the blank, forming the bottom of the bag andsecuring the side edge-portions of the wider portion of the blank to theedges of the narrow portion, and producing hand-holes through the bagand the reenforcing sections to produce handles.

5. In a method of making reenforced bags, gumming reenforcing sectionsto the ends of a bag-blank, and leaving free endportions, gumming theend-portions over on to the said sections, forming a bag from the blank,having edge seams, and the sections in opposition at the mouth of thebag, and producing hand-holes in the bag through said sections.

6. Steps in the method of making reenforced bags, consisting informing abagbody blank with an inwardly turned edge, securing a reenforcingmember under said inwardly turned edge. and forming a handhole throughthe reenforcing member and co-extensive portions of the bag-body blankand inwardly turned edge.

7. Steps in the method of making reenforced bags, consisting in forminga bagbody blank with opposed inwardly turned edge portions, securing andconcealing reenforcing members under each of said edge portions, andforming hand-holes through said reenforcing members and the co-extensiveportions of the bag-body blank and inwardly turned edges. 1

GEORGE C. SNYDER.

